Union



Sheet 1.

2 Sheets- L. ONDERDONK; FEEDING MECHANISM FOR SEWING MACHINES.

(No Model.)

Patented Oct. 8, 1895.

(N0 Mbdel.)

. 2 SheetsSheet 2.- L. ONDERDONK FEEDING MEGHANISM FOR SEWING MACHINES.

Patented Oct. 8, 1895;

LANSING ONDERDQNK, or nosron,

MASSACHUSETTS, ASSIGNOR TO THE UNION SPECIAL'SEWING MACHINE COMPANY, OF CHICAGO, ILLINOIS.

FEEDING MECHANISM,FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 547,676, dated October 8, 1895. Application filed December 9, 1892. Renewed March 20, 1895. Serial No. 542,548. (Nr; model-l To all whom it may concern.-

Be it known that I, LANSING ONDERDONK, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Feeding Devices for Sewing-Machines, of which the following is a description, reference being bad to the accompanying drawings, and to the letters of reference marked thereon.

My invention relates to an improvement in sewing-machines; and itsobject is to provide a feeding mechanism for use upon what are known to the trade as cylinder -machines that is, machines having a horn or cylinder over which the goods are placed to be sewed instead of the ordinary flatbed-plate. Such machines are useful in the manufacture of. boots and shoes for sewing the vamps with rows of stitches along the edge.

The present invention relates to a machine of the general type known asUnion Special Machines, and in certain respects is an improvement upon the construction of feeding mechanism shown in the patent to Mather and Dearborn, June 3, 1894, No. 299,568, and in a general way consists in the manner of constructing the parts for use upon a sewing-machine having a cylinder, whereby they may. all be located within the cylinder and occupy a comparatively small space.

My invention therefore consists inthe matters hereinafter described, and referred to in the appended claims.

My invention isillustrated inthe accompanying drayings, in which'- Figure 1 is a side elevation of so much of a sewing-machine as is necessary for an understanding of my invention, part of the cylindrical casing beingjremoved. Fig. 2 is an end view with the cap removed. Fig. 3 is a plan view showing the operating parts within the cylindrical casing, the top plate of the casing being broken away. Fig. 4 is a section on line 4 4, Fig. 1, looking in the direction indicated by the arrows, showing merely the means for rocking the feed-shaft. Fig. 5 is a section on line 5 5 of Fig; 1, looking in the direction indicated by the arrows. Fig. 6 is a plan view of the adjustable eccentric connection between the main shaft and the rocking frame; and Fig. 7 is a vertical section of the same, showing details whereby the ad .justment is effected.

In the drawings, A represents the'standard adapted to be attached to a bench table.

B is the overhanging frame or goosencck; O, the needle-arm, and D the main shaftof the machine.

E is the needle-bar carrying two needles, as herein shown. A roller presser-foot a is usedand a guide-foot Z) forpreventing deflection of the needles.

The above-mentioned parts all operate in the usual well-known manner, and hence do not need to be specifically described.

F is a-cylindrical casing, designed in the present case to be the bed-plate of the machine, upon which the Work to l; sewed is placed, said casing serving'to inclose the operating partsof the machine and having an upper removable covering 0 and a hinged end cap (Z, whereby access can be had to the -parts. The present invention has reference particularly to an improved feeding mechanism so constructed as to be capable of inclosure within said cylinder.

G represents a shaft running nearly the whole length of the cylinder and having bearings in the standards of on the inside of said cylinder. This shaft has fixed to it two arms 9; forming a fork, between the prongs of which fork a cam h on the main shaft revolves, thereby oscillating said shaft G. At its outer end the shaft G is provided with a curved arm I-I, fixed to it and forming an extension thereof beyond the cylinder proper. At its outer end.

this curved arm is provided with an opening,

within which is placed a stud, shaft, or pin i, to which said curved arm is rigidly attached. At a point near the center of the cylinder the shaft G is provided with a laterally-extending lug or standard I, rigidly attached toit, so that it, togethcith the curved arm II, rocks with the shaft G. This lu i is provided also 7 with a stud, shaft, or pin k, so arranged as to be approximately in line with the stud or pin 1'. Loosely mounted on the studs or pins 1' and k is the rocking crank-frame K, and I prefer to extend the lugs or cranks H I inwardly, so that'thelongitudinal axis of the crank-frame pivots will about coincide with the longitudinal axis of the cylinder, so that a .feeddng mounted on said frame will hea'aised upand down by the movement of the shaft G, and at the same time when a forward and backward at a curved path corresponding to the curve to which is removably secured in the dove! loosely through the openings on the lug I and of the periphery of the cylinder, the advan-- tage of which will be perfectly apparent to any one skilled in the art. This consists of three parts, the forward longitudinal 'arm 1,,

tailed groove m the shank L of the feed-dog M, curved to conform to the shape of the cylinder and extending up through an openi-ngin the throat-plate N, the short connecting part? '11,, and the rearwardly-eirtending longitudinal arm 0. This cran k-frame is preferably made all in one piece. W'h-ile I have shown the partl of the crank-frame as provided with lugs 10 p, having openings fitting over the-studs or pins ik, it will be understood that the studs or pins may be secured to the arm 2 and pass curved arm H. The outwardly-extending part 0 of the frame is provided with an opening, in which is secured the stud or shaft 0. Upon one end of this shaft is mounted, so as to swing thereon, one end of the crank P, which has a split hearing at its opposite end encircling a sleeve q, surrounding the axial stud, pin, or shaft 1', such sleeve being held from longitudinal displacement by the nut Q on' the threaded end of the shaft or pin 0'. This shaft or pin '1' is herein shown as provided at its inner end with a. circular enlargement or head, which is fitted in a slot 8, formed in a crank-disk R, attached to the end of the main shaft. This slot is formed with a contracted front opening, so that the head of the stud 'r is prevented from longitudinal displacement.

To permit. of adjustment of the stud 'r in the slot and thereby vary the throw of the crank P, I have provided a screw S, which passes through the head of the stud r. The screw is secured to the crank-disk by means of the clamping-plate T, having a slot which fits the screw beneath the head thereof, said clamping-plate being secured to the periphery of the crank-disk by screws 11., as shown. To accomplish the adjustment of the stud '1- without changing the position of the screw S with respect to the crank-disk, I have provided said screw with a collar u just below the clamping-plate T, so that longitudinal movement of the screw S is prevented by the head and collar, respectively, so that in the turning of the screw the head on the stud 1* will be moved up or down, thus changing the point of connection of the crank-disk'on the main shaft with the crank P, thereby altering the throw of said crank and varying the amount of forward and backward movement of the rocking frame and feed-dog. It will readily be understood, therefore, that by reason of remove the rockingconnectienef the feed-dog carryin-g-fframc-w-i'th the shaft G and the crank shaft, a cylindrical casingintowhich the main shaft extends, a second shaft extending lengthwise of the casing and parallel with the main shaft, but the forward end in advance of the forward end of the main shaft, connections between the main shaft and said second shaft for operating the latter, a rocking frame pivotally connected to thesecond sh aft,

its pivot points being in substantially the same horizontal plane therewith, whereby in the movement of the second shaft the frame is rocked up and down, a transversely arranged feed dog carried by the rocking frame, said rocking frame having a longitudinal nearwlardly extending part in close proximity to the forward end of the main shaft, and a directcrank connection between the forward end of the main shaft and said rearwardly extending part of the rocking frame for giving the forward and backward movement to the feed, substantially as described.

2. The combination with the main shaft, of

a rock shaft with connections bet-ween the same for operating the latter, a laterally extending'crank secured to the rock shaft and provided with a stnd, a second laterally extending crank on the end'of the rock shaft and having also a stud in line with the stud on the first .crank, a crank frame pivotally supported on said studs in substantially the same horizontal plane as the rock shaft, whereby in the movement of the rock shaft the crank frame is raised and lowered a feed dog carried by one arm of said crank frame, the other arm having an adjustable eccentric connection with the main shaft and independent of the rock shaft, substantially as desaid crank being curved to conform to the shape of the casing and towbring its stud in line with the stud on the first crank said studs being in substantially the same horizontal plane as the rock shaft, a crank frame pivotally supported on said studs, one arm ,of which is arranged longitudinally and carries .5, 4-: The combination with the feed dogtheother arm having an adjust ableeccentric connection with the main shaft,

said parts being all located within thecasing;. I

. r tical movement,- substantially as described. the mainshaft, of

substantially as described.

a rock shaft with connections between the two forrock-ing the latter, a lateral extension fixed-on said rock sha ft,-a-;second curved extension secured} thereon, a rocking crank frame pivotally lconnected to said extensions, and hav ng?l ligitudinalbar carrying the feed; dog, a studj fixed to the crank frame, a ,cifanleslfldyfid Op saidstu d, andan adjustable 1 in anc onnection between; said crankand- '15? oal-easing, amain shaft extending lengthwise the;-niain shaft fifibstantiallyias described.-

.5; Agsewing machine comprising a cylindriof. and within the same, and provided on its inner-"endzwith-ga slotted disk, a rock shaft paralleli'w'ith'thelmain shaft and carrying two cranka; a: rocking frame ca'ri-yinga feed dog f saidrecking frame, a. crank sleeved Zion id ndiencircling atits'opposit'e end .sta. which is in adjustable. connection with the'sletted disk, all I the parts'being lotf gfi-g ithi aid easing;-1 snbstantially as de- 80116;;

A sewingm'achine{comprising a main.

shafh arock shaft with connections between.

pendent ofthe-roek' shaft; substantially as described"; v I V 7. A sewing machine comprising a main shaft having on the inner end a slotted disk,

two for.operating .the latter, a crank I secured to said shaft, a curvederankH. also attached thereto, a rocking frame K having lugs 19, 19, adapted to be pivotedito the cranks H, I, having also aglongitudinalfeed bar-carrying the feed dog ar d-ha ing the parish, 0, a stud secured-withinsaid part, 0, a crank P-jonrnaled at one end on. the: stndiO andliaving at its opposite lendaisplitabeari ig; a Stud '1' fitting at onejendm the tithe diskonthe main af an having a!titlesno q fitting within the-- split bearingon the'end of stantially as described.'.*

8. The co'm'binatio with e. crank; s

the main shaft having on one end a slotted "disk, a. stud fitting at one end in said slot,1a screw passing through said stud within the slot/and pro vided with a collar and a clampingplate embracing the screw betweenthe collar and the head thereof, whereby longitudinal displacement of the screw-is. prevented, a crank enon he ed with said cranks,a studjsecured to [the two for operating the latter, a crank-I se-- 10, adapted to be'pivotedcrank frame and the' main shaft and inde-- a rock shaft with connections between the.

circling the stud and secured at its op belts and to a rocking frame carryin a fee dog, means for rocking the frame an, givingit ver- 9. A sewing machine comprising a cylindrical casing, a main shaft extending lengthwise of and lying within the same, a rock shaft extending parallel with the main shaft with operating connections between the two, a lateral crank secured to the rock shaft, a second crank onkthe end of said shaft curvedto cenform to thes'hape of-the cylinder, a rocking crank frame pivoted-to saidcranfks and having a longitudinal arm, a curved fed-doglsecured on said arm and extending atright anglesto said arm, anda connection between the crank frame and the main shaft for regulating the length ofthrowbfthe feed dog,all: of said parts being located within the casing, and complemental stitch forming mechanism ;substantially as describedrq a 10. A sewing machine comprising a main shaft, a cylindrical casingyfa second shaft in operativeconnection'with'the main shaft and located within the casing, a'frame secured to and rockedby said shaft. andeccentrically connected. with: the-main shaft and having a longitudinally extending-bar, and atrans- .v.ersely extending curved-deed bar attached thereto; substantially as described.-

11. A sewing machine comprising a mam shaft, a reck'shaftarranged parallel therewith operated thereby a cylindrical'casing within which said shafts are. supported, a rocking feed-dog opcrated f'romthe rock shaft, the pivotal point thereof being .insubstantially the same horizontalplane as the second shaft and approximating the longitudinal axis of the cylinder whereby in the oscillation of said Y second shaft the feed dog is raised and lowered and swings back and forth in a 'plane curved to conform to the plane of the cylinder; substantially as described.

12. In a sewing machine having" curved bed plate, a main shaft, a rock shaft extending throughout the length' of the bed plate with means for operating said rock shaft from- .the main shaf t',"lug s extending laterally from .said rock shaft,'a feeddogcarrying frame pivoted to said lugs, the longitudinal axis of said pivot being coincident with that of the curved bed plate, and means connectingthe main shaft with the feed'dog carrying frame for giving lateral movement thereto, whereby intlie oscillation of the. rock shaft,'the frame -.moves verticallyon' its pivot point, the latter acting as a fulcrum on which it also swings laterally, thus causing the feed dog to move ina curved line always; substantially as described.

In testimony whereof I affix my signature in presence oftwo witnesses. j LANSING ONDERDONK.

Witnesses:

MICHAEL J. CREED, JOSEPH A. DART. 

